Add missing crosswalk intro

Also update Trove link to one from Wayback Machine (the original one no longer works)

Signed-off-by: Arthit Suriyawongkul <[email protected]>

Author: bact

content/crosswalk/datacite.md

@@ -2,10 +2,8 @@
 title: "Crosswalk for DataCite metadata"
 image: "/img/datacite.png"
 date: "2017-06-01"
-
 ---
 
-<img src="/img/datacite.png" width="400" />
-
+[DataCite](https://datacite.org/) metadata is a standardized set of schema used when registering a DOI to ensure research outputs are findable, citable, and connected within the global scholarly ecosystem.
 
 {{< crosswalk name="DataCite" >}}

content/crosswalk/doap.md

@@ -6,5 +6,4 @@ date: "2017-06-01"
 
 [DOAP](https://github.com/ewilderj/doap) (Description of a Project) is an XML/RDF vocabulary to describe software projects, and in particular open source projects.
 
-
 {{< crosswalk name="DOAP" >}}

content/crosswalk/dublincore.md

@@ -3,5 +3,6 @@ title: "Crosswalk for Dublin Core metadata"
 image: "/img/dcmi.png"
 ---
 
+[Dublin Core](https://www.dublincore.org/) vocabulary (or the Dublin Core Metadata Terms - DCMT) is a widely used, general-purpose metadata vocabulary for describing any type of resource.
 
 {{< crosswalk name="Dublin Core" >}}

content/crosswalk/figshare.md

@@ -3,7 +3,6 @@ title: "Crosswalk for figshare metadata"
 image: "/img/figshare.jpg"
 ---
 
-[figshare](https://figshare.com) is a general purpose scientific data repository that provides DataCite DOIs.
-
+[figshare](https://figshare.com) is a general purpose scientific data repository that provides [DataCite](https://datacite.org/) DOIs.
 
 {{< crosswalk name="Figshare" >}}

content/crosswalk/github.md

@@ -4,6 +4,8 @@ image: "/img/github.png"
 date: "2017-06-01"
 ---
 
+[GitHub](https://github.com/) is a widely-used proprietary developer platform that allows users to store, manage, and share code using Git for distributed version control.
 
+[GitHub API](https://docs.github.com/en/rest) provides a programmatic way to retrieve repository metadata.
 
 {{< crosswalk name="GitHub" >}}

content/crosswalk/java.md

@@ -2,10 +2,8 @@
 title: "Crosswalk for Java's Maven metadata"
 image: "/img/java.png"
 date: "2017-06-01"
-
 ---
 
 [Maven](https://maven.apache.org/what-is-maven.html) is a popular packaging/build system for Java-based projects.
 
-
 {{< crosswalk name="Java (Maven)" >}}

content/crosswalk/node.md

@@ -1,10 +1,11 @@
 ---
-title: "Crosswalk for NodeJS package.json"
+title: "Crosswalk for Node.js package.json"
 image: "/img/npm.png"
 date: "2017-06-01"
 ---
 
-The `npm` package manager for NodeJS [defines](https://docs.npmjs.com/files/package.json) software metadata using a `package.json` file. 
+The `npm` package manager for JavaScript [defines](https://docs.npmjs.com/files/package.json) software metadata using a `package.json` file.
 
+`npm` is the default package manager for the JavaScript runtime environment Node.js.
 
 {{< crosswalk name="NodeJS" >}}

content/crosswalk/publiccode.md

@@ -2,7 +2,6 @@
 title: "Crosswalk for publiccode.yml"
 image: "/img/publiccode.png"
 date: "2025-08-10"
-
 ---
 
 The [publiccode.yml](https://github.com/publiccodeyml/publiccode.yml) spec defines metadata for public sector OSS software projects, used by national and international catalogs to index, present, and facilitate the reuse of open source software developed by or for public administrations.

content/crosswalk/python.md

@@ -2,10 +2,8 @@
 title: "Crosswalk for Python distutils"
 image: "/img/python.png"
 date: "2017-06-01"
-
 ---
 
-[Python `distutils`](https://docs.python.org/3.6/distutils/) allows users to associate a range of metadata information when packaging and distributing python-based applications or source code.  
-
+[Python `distutils`](https://docs.python.org/3.6/distutils/) allows users to associate a range of metadata information when packaging and distributing Python-based applications or source code.  
 
 {{< crosswalk name="Python Distutils (PyPI)" >}}

content/crosswalk/ruby.md

@@ -2,10 +2,8 @@
 title: "Crosswalk for Ruby gems"
 image: "/img/ruby.png"
 date: "2017-06-01"
-
 ---
 
 Ruby gems [specify metadata](http://guides.rubygems.org/specification-reference/) in a `.gemspec` file.
 
-
 {{< crosswalk name="Ruby Gem" >}}